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  • 标题:Real-time probabilistic seismic hazard assessment based on seismicity anomaly
  • 本地全文:下载
  • 作者:Sun, Yu-Sheng ; Li, Hsien-Chi ; Chang, Ling-Yun
  • 期刊名称:Natural Hazards and Earth System Sciences
  • 电子版ISSN:2195-9269
  • 出版年度:2020
  • 卷号:20
  • 期号:3
  • 页码:743-753
  • DOI:10.5194/nhess-20-743-2020
  • 语种:English
  • 出版社:Copernicus Publications
  • 摘要:Real-time probabilistic seismic hazard assessment (PSHA) was developed in this study in consideration of its practicability for daily life and therate of seismic activity with time. Real-time PSHA follows the traditional PSHA framework, but the statistic occurrence rate is substituted bytime-dependent seismic source probability. Over the last decade, the pattern informatics (PI) method has been developed as a time-dependentprobability model of seismic source. We employed this method as a function of time-dependent seismic source probability, and we selected two majorearthquakes in Taiwan as examples to explore real-time PSHA. These are the Meinong earthquake (ML 6.6) of 5 February 2016 and theHualien earthquake (ML 6.2) of 6 February 2018. The seismic intensity maps produced by the real-time PSHA method facilitated theforecast of the maximum expected seismic intensity for the following 90 d. Compared with real ground motion data from the P-alert network, ourseismic intensity forecasting maps showed considerable effectiveness. This result indicated that real-time PSHA is practicable and provides usefulinformation that could be employed in the prevention of earthquake disasters.
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